Hitchhiker ID Needed - Short Video

[christyf5]

Ok here's my guess:

Predaea weldii



P. weldii is found in subtidal habitats, where it grows between the branches of corals, reaching a length of 5 cm. It is extremely soft and gooey, turning into a shapeless blob when out of the water. Although not usually abundant, this seaweed is quickly noticed because the tips of its branches are fluorescent red.

from: http://www.coralreefnetwork.com/marlife/stepath/rhodophyta2.html


Also see: http://seaslug.info/display.cfm?id=8479